Could you please respin on the latest git master and post an updated log- many of the line numbers have changed? On that note, please give a more verbose log so that the context is retained for future reference even after the code moves around.

Also, your command line invocation does not work - I get after extracting (e.g)
ffmpeg -i id:000000,src:000000,op:flip1,pos:4 -y test.avi
...
id:000000,src:000000,op:flip1,pos:4: Protocol not found